Based on the data provided for Punjab over the years 1997 to 2001, find the year in which the percentage of candidates qualified from Punjab over those appeared from Punjab is the highest.

Let us calculate the qualification percentage $\left(\frac{\text{Qualified}}{\text{Appeared}}\times 100\right)$ for Punjab across each year:
* Year 1997:

$$\text{Percentage}=\frac{680}{8200}\times 100\%\approx 8.29\%$$

* Year 1998:

$$\text{Percentage}=\frac{600}{6800}\times 100\%\approx 8.82\%$$

* Year 1999:

$$\text{Percentage}=\frac{525}{6500}\times 100\%\approx 8.08\%$$

* Year 1990 / 2000:

$$\text{Percentage}=\frac{720}{7800}\times 100\%\approx 9.23\%$$

* Year 2001:

$$\text{Percentage}=\frac{485}{5700}\times 100\%\approx 8.51\%$$

Comparing the computed values:

$$9.23\%>8.82\%>8.51\%>8.29\%>8.08\%$$

The percentage is highest in the year 2000.